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The results on the latest hybrid PCB are in: * I had a resistor in the wrong place (bodge wires plus extra resistor required, already fixed for next PCB revision) * -5 volt rail works on the tester board after ^ Next up, I desoldered the hybrid module from a 5120 I've had for awhile. This one...

That particular model is obsolete, and has been replaced by: https://androda.work/product/powerbook-bluescsi-f4lite-tht-v1/

Tested the eMate display cable, and success! This eMate had a working display but wouldn't accept touch inputs. Now it does. :) I also went through the process of fixing up the hinge so it shouldn't eat the display cable again. Fixing screen hinge tightness was pretty time consuming. If...

30 second update: -5 will be fixed with the next PCB revision (see attached bodge wire nightmare test of the new -5 system). All that remains are the mysteries of the A/D line. I've considered throwing away the complicated op-amp system for something totally basic like a resistor divider that...

F4 BlueSCSI, a BlueSCSI Fork by Androda (Tech by Androda) https://github.com/androda/F4_BlueSCSI F4 BlueSCSI devices have been available for some time now, in a wide variety of styles: * PowerBook * Standard 50 Pin Internal * DB25 External * Centronics 50 Pin External The software is licensed...

Thanks for the ideas and interest. The most important thing for me to note is that I can't recreate a cable without an original (and a damaged original is fine). Generally speaking the pinouts are not going to be available. And measurements often must be very exact. If you have an original...

A second revision of these cables has been made and they're in the mail now. This revision makes the holes for the connector slightly larger for easier soldering, and the whole back of the cable will have the PI protector film. I've found a connector which I think will work to replace the...

After a great many rounds of back and forth with the flex cable manufacturer, the eMate flex cables are now shipped. Also in that order is a set of second revision display cables for the backlit mac portable. Here's hoping everything works. :)

Some progress has been made on the hybrid recreation. I assembled my new SMD style one and gave it a shot. Under-voltage lockout is now up to 6 volts, which is just about right for a 6v lead acid battery. Discharge much lower than this and you risk battery damage. The -5v generator isn't...

Based on my understanding, it's expected that you need the DOS card to pass through video. DOS card is basically a switch, and outputs either the Mac video or its own signal. It's kind of an awkward setup, where Mac video has to be passed into the DOS card and then the card decides which video...

Order is placed for the first test run of eMate 300 display flex cables. Presuming they work, I'll be using several of these to fix up that lot of eMates I recently acquired. --------- If you have a system which is dead because of a bad flex cable, please contact me about it. A picture of the...

There are a few bare v1 cables remaining at $35 each, so DM me if you're interested. Life has been hectic, I hope to have a v1.1 design which addresses the issues with v1 in the next few weeks.

Took apart a random eMate and yep. Display cable eaten, hinges coming apart. You really have to dig in these things to get to the hinges, it's not convenient at all. At least this cable is a lot simpler than the one for the mac portable...

Next up we have an original Mac Portable, and nine eMates. These eMates have screen and hinge issues, which is not surprising. I'll be recreating the display cable to see if that brings them back to life. And the mac portable is a portable. Needs work.

A DRAM-only version is on my list of projects to do. I'd like to find actually new RAM chips to use instead of buying new old stock and just hoping that they work (given that I don't have a RAM tester).

If you responded to the survey and are still interested in one of these first-batch cables, please send me a direct message. I have 5 cables remaining, including the one which I posted above which already has the connector moved. Looks like 8 people responded to the survey, so it's first come...

@techknight has confirmed that the recreation cable works! It needs a little bit of tweaking to make assembly easier. For example, the soldering rings around the mounting holes for the connector are a bit small and hard to get good solder adherence. I assembled one this morning and...

I did see at least some of what silicon insider is doing on 68kmla. This is an approach I had considered before going down the route of just recreating the existing hybrid. It seems like a really simple idea to stick a 5v regulator in there, but that doesn't take into account the variety of...

Tweaked a resistor and the under-voltage cutout now acts at 5.59 volts, which is much more survivable for a lead acid battery. Turns out that a fair few of these custom resistor values are still available as standard SMD resistors, and their values might not necessarily have to be so precise...

Tested the first prototype of this design (external 12v brick), and it worked - booted my LC III. Barrel jack input (2.5mm center pin) on the left, 12 to 5 buck chip and an inverter hanging off the 5v to get -5. Fuses and protection zeners built in, to safeguard your Mac. The final design...